Home / 131,638.40-196,881.60-117,699.20

Finding the Fourth Proportional to 131,638.40, 196,881.60 and 117,699.20

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Solution

The fourth proportional to 131,638.40, 196,881.60 and 117,699.20 is: 176,033.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,638.40 : 196,881.60 = 117,699.20 : x
  2. Step 2: Convert to fraction form
    131,638.40/196,881.60 = 117,699.20/x
  3. Step 3: Cross multiply
    131,638.40x = 196,881.60 × 117,699.20
  4. Step 4: Simplify right side
    131,638.40x = 23,172,806,814.72
  5. Step 5: Solve for x
    x = 23,172,806,814.72/131,638.40
  6. Step 6: Final answer
    x = 176,033.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.